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Unformatted text preview: SOL UT) 0N5 Math 122, Section 021 Worksheet 2 Show all work for full credit.
1. A projectile is ﬁred upward from the top of a cliff. Its height above the ground (in feet) after t seconds is given by
s(t) = —161‘2 +1801 +100.
Calculate the average velocity of the projectile from t = 2 to t = 7 . Give units. 3(7) —s/2>  6% 6% g ‘
T ’ “5“” 2. In each of the following cases, determine the relative, or percent, change.
a. A bicycle changes in price from $140 to $175. ’75“ W3 3, a 25 252, meme.
MO M (“:03 b. A pair of jeans changes in price from $65 to $26. 3. A company that manufactures book bags can produce 43 bags for $2200 and 68 bags
for $2600. The book bags sell for $52 each. Determine the company’s breakeven point.
Explain the signiﬁcance of this point to the company. 605+: m: leffmaa Bomb:ch 5ZZ‘MagH5IZ
' 3 5% = 15/2
C '2200: w/f "/3) [El] & '  i [ Wad/v] Z/Z 170016 bags +144 wt“
vent/6. 2‘ 522 have ox ‘0‘“te eﬁ $0, 11% WW} Mum more than HZ [9036 it: Matt from, 4. The chart below gives the cost, C(q) , and the revenue, R(q) , associated with
producing a quantity q of some good. rummum a. Find a formula for the cost function, C(q) . m: AS :: 1233’11'0'5 C 4110.50 : £759,503
A2 60—50 : / Z 75
b. Find a formula for the revenue function, R(q) . )2sz 7/2.5c>=,0/503 :
,‘7= I815 22 WE c. What is the variable cost per unit? , 35/275 d. What price is being charged for the item? e. How many units of the item do we have to sell to make a proﬁt? How did you
determine this? ' \r x“
W250 1/275 V'Wj 7k Com/w: mar:
5.5; r 4732 all leaEA I;
j 5 85” 4’ Emalmn to Make will. 5. The table below gives values of a function f (t). mm “~42: a. Does the function appear to be increasing or decreasing over the given interval? 7‘, b. Does the function appear to be concave up or concave down over the given interval? 510152025 ...
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 Spring '08
 KUSTIN

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