No one will help me will you? The first four terms of a sequence are shown below

3, 7, 11, 15

Which of the following expressions could be used to find the nth term of the sequence?
a.4 + 3n
b.3 + 4(n - 1)
c.3 + 4n
d.4 + 3(n - 1)

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.

Solve the system of equations. 2x-2y=-4 and x+y=8. show work