4 years ago

Part 1: Graph piecewise functions from tables and equations.

1 answer:

8 0

A.) 3.2 pounds package has a shipping cost of $4.13. We can't use the cost assigned to 3 lbs because the package is over 3 lbs but it is not over 4 lbs so we use the cost of 4lbs.

b) It is better to use a line graph where x values represent the weight in pounds and the y values represent the cost.

c) f(x) = 2.69 + 0.48(x-1)

d) domain is the x values; range is the y values

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What are the differences between an (Algebraic) equation and expression?

lara31 [8.8K]

Hello!

An equation has an (=). They equal something. For example, 1+1=2 is an equation.

An expression does not have an equal sign. For example, 2 or 1+3 are both expressions. They have no equal sign.

I hope this helps!

6 0

3 years ago

A sphere has a volume of 36π m3. Find the surface area of the sphere.

shusha [124]

V=4/3πr^3
36π=4/3πr^3
3/4(36π)=(4/3πr^3)3/4
27π=πr^3
π(27π)=r^3
27=r^3
square root
r=3
s.a=4πr^2
s.a=4π(3^2)
s.a=4π(9)
s.a=36π