Katherine uses $\frac{7}{10}$ of a gallon of red paint to paint $\frac{3}{5}$
of her wall.

How many gallons of red paint will she use to paint her whole wall?

A $\frac{21}{50}$

B $\frac{7}{15}$

C $1\frac{1}{6}$

D $1\frac{3}{10}$

This question consists of 2 parts, a and b. marco got a quotient of 70 when he divided 49 by 0.07. part a what is the correct answer to this problem? part b what mistake did marco make? you!

Peaches cost $4.29 per pound. find the cost of two and a quarter pounds of peaches.

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).