Question

Please help will give best answer!!! Need help ASAP

3. What is the sum? (1 point)
7/3+(-3/8)

64/24
47/24
-4/5
-5/4

1. What is the simplified form of the following expression?
2x^2y + 3x^2 + 4y + 3x^2y + 2y
(1 point)
5x^4y^2 + 3x^2 + 6y^2
8x^2y + 6y^2
5x^2y + 3x^2 + 6y
14x^2y

20. Using the formula , where d is the distance in miles, r is the rate, and t is the time in
hours, at which rate must you travel to cover 227.5 miles in 3.5 hours?
(1 point)
65 mph
75 mph
85 mph
95 mph

Answer 1

3. -5/4
1. 5x^2y+3^2+6y
20. 65 mph

Answer 2

7/3 + (-3/8) = 7/3 - 3/8 = 56/24 - 9/24 = 47/24

2x^2y + 3x^2 + 4y + 3x^2y + 2y...combine like terms
5x^2y + 3x^2 + 6y

distance = rate * time...looking for r
d/t = r

227.5 / 3.5 = r
65 = r