3. Scientists determined that the rate y (in calories per minute) at which you use energy while walking can be modeled by y=0.00849(x-90.2)2 +51.3 where x is your walking speed (in meters
per minute). What speed minimizes energy use? (90.2, 51.3)

The two after the parenthesis should be an exponent

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

shift 4 units up, and 1 unit left.

it will translate f(x) = 3^x to g(x) = 3^(x+1) + 4