How to do Algebraic expressions

The length of a rectangle is 5 ft less than three times the width, and the area of the rectangle is 28 ft2. find the dimensions of the rectangle.

The sales tax in New York State is 4%. Which expression can be used to find the amount of sales tax on a $50 item? A. 4/1 • 50 B. 4/10 • 50 C. 4/100 • 50 D. 4/1,000 • 50

The function f is differentiable and ∫x0 (3f (t) + 5t) dt=sin (x). Determine the value of f′ (1π).

How do I simplify 355/10

A regular polygon is both equilateral and equiangular a. True b. False

200 cans of food were distributed to 3 charity homes. 2/5 of the cans were given to the first home, 1/3 of the remainder to the second home and the rest to the third home. How many cans did the third home receive?

A car dealer earns a 4% Commission on all cars sold last month he earned $7,000 in commission he wants to earn $8,000 in commission this month what increase is total sales from last month total sales does he need in order to reach a go for this

The charge for a bicylce repair was $9.28 for parts, 1/4 hour of labor at $18 per hour, and a $2 shop fee. What was the total cost (c) of the repair?

18x-16y=-312 78x-16y=408

How to estimate 5.4 x 0.1