Answer:
1. -4x^2 + 5x + 3
2. x^3 + 9x + 5
Step-by-step explanation:
hope this helps
Answer:
Step-by-step explanation:
Given
time taken by Carlos to cycle is 
For case (1)
Average speed 
For 
Distance traveled 
Therefore Carlos might not be able to cover 6 miles with average speed of 16 ft/s
(2)
for 0.5 hr
distance traveled

Therefore Carlos might be able to cover more than 6 miles with 
Answer:
A. Kim's son
B. 9/28
Step-by-step explanation:
Give the fractions a common denominator of 28 then add.
12/28>7/28, so the son mowed more. 7/28+12/28=19/28. subtract this from 1 whole lawn and get 9/28.
Plug each of the numbers into "X". -5*5= -25 -4= -29<16 the correct answer is 6. 5