MATH 070, SAMPLE EXAM 4 (solutions), SUMMER 1, 2006
(Expect ve problems, possibly multi-part, at twelve points per problem.)
(1) Write the following system of equations as a matrix equation of the form AX = B. Find
X as A1 B.
4x 2y =
3
3x + y = 10
4 2
x
3
MATH 070, SAMPLE EXAM 3 (solutions), SUMMER 1, 2006
(Expect six problems, possibly multi-part, at ten points per problem.)
(1) Sketch the graph of the solution set for the following system of equations:
x 2y = 1
3x + 4y =
7
The rst equation has x-intercep
MATH 070, SAMPLE FINAL EXAM QUESTIONS (solutions), SUMMER 1,
2006
(Expect nine problems, possibly multi-part, at ten points per problem. At least four of the
problems will be taken from the rst four exams, so here are some sample problems from
the later m
MATH 070 Sample Test 3A
1) Factor completely: a) b) c) d) e) f) g) 14 x 3 y + 7 x 2 y - 7 xy x3 + x 2 + 4x + 4 18 x 2 - 9 x - 14 4 x 2 - 36 xy + 81 y 2 y 4 - 25 125 + R 3 12 x 2 + 46 xy - 8 y 2
2) Solve for y : 6 y 2 - 22 y = 40 In problems 3, 4, and 5 yo
MATH 070, SAMPLE EXAM 2 (solutions), SUMMER 1, 2006
(Expect six problems, possibly multi-part, at ten points per problem.)
(1) You borrow $500 and agree to pay it back in a lump sum in six months, at a simple
interest rate of 6% per year. How much do you