I really dont know how to start this Calculus 1 question!

According to the given plot, . Then the linear approximation to at is

Then

On the interval [0, 1], the plot of is positive, so is an increasing function here. But we can see that is approaching 0. This means tangent lines to have a positive slope, but the slopes are approaching 0 and are thus becoming less steep. This in turn means the tangent lines lie above the curve, so the approximations are greater than the actual values of and .

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4

$20.01

step-by-step explanation:

the sale price is (1.00 - 0.77)($87), or 0.23($87), or $20.01.