A car is 500 miles from its destination after 2 hours and 410 miles from its destination after 3.5 hours. What is the rate of change?
A 1.5 miles per hour
B. 60 miles per hour
C. 90 miles per hour
D. 135 miles per hour

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

the answer is b.

surface area: 169π

volume: 366π

i got it down.

we can set up an equation to find the girls' ages. the equation is         28=0.5x-5+x. (comment if you need me to explain how i got this equation.) so, you add x and 0.5x to get 1.5x and add 5 to each side. your new equation is 33=1.5x. now divide both sides of the equation by 1.5 to get 22=x. because x is mary's age, to find jasmine's age we subtract mary's age from 28. we find that mary is 22 years old and jasmine is 6 years old.

its d. trust me just answer make the test just do it