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

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

i believe that the answer is

b. y-1=-2(x-4)

hope this !

savings account is an account only used for saving money. this acts as an emergency source of funding for an individual. answer a would result in the money in his account to grow as it specifically states that interest is compounded daily at the rate of 2%

step-by-step explanation: