Test4Solns - Intermediate Algebra Test 4(Chapters F Show...

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Intermediate Algebra - Test 4 (Chapters ! , Show All Work!!! 1. (la pa) A racer is bicycling ( a a s t e r --- than F- a.pgon on a mountain bike. In the time it takes the racer to travel 80 km, the person on the mountain bike has gone s. Find thr speed of each hkycht. Write your answer in a sentence! & pa. +xr - 'X --f. * l r = F p a=&- - . .:**d o p = Q * ;s 4 ~ ~ r a-cL OpAepm-Ww * mamfiikl ~ C L 1-5 & ~ k - / 1. (10 pu.1 Derek can clean the yard in 9 hours. I can clean the same yarcf in 12 hours. How long would it take us, working together, to clean the yard? Write your answer in a sentence, using HOURS AND MINUTES!!!
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R 1, f--; J7 I I I . I ': 2. 71s pt~., A rocket is launched from a rooftop with an upward velocity of 48 Wsec. The height, in -I feet, of the rocket, r seconds after having been launched from a 160-ft high rooftop is given by: c: . h(t) = -16t2 + 48t + 160. I : . .c. a. After how long Mll the rocket reach the ground? Write your answer in a sentence! 1' ' 4 : - . - . ' 1 , 1 :f -. * I * . . - . L . ' . * t - ,. % 1 I I - - & * + , q & ~ & & ~ ~ - . : tL - I ~ & " - ~ t - ( o ) - I ? "-1:'. 7 I ' 7 I 4 . 4 . . l a 1 - .-fbCt-$)CtWo;?a it-: ;4 I - - ;: J1- L'. . -. .- T -- - - -1 - - - A' t . 5 s e d , * WE ~ " k " pd. - w ,; ' 2, - C b. After how long will the rocket
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