In a box of 36 pencils,20 are sharpened. what is the ratio of sharpened pencils to unsharpened pencils. 30 points for

a.4: 9

b.4: 5

c.5: 9

d.5: 4

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

How do i do this? i don’t understand

For the inequality |c| < |d| to be true, which of the following must be true?