PL HELP M Add these two expressions.

(–45t + 53s) and (–3 – 75s + 2t)

A. 6/5t + 4/15s – 3

B. –14/5t – 11/5s – 3

C. –115t + 113s – 3

D. 11/5t – 4/15s + 2

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?