3 sigma (4x(1/2)^t -1) What is the value of t= 1

A. 7/2

B.7

C. 7/8

D. 8

The triangles are similar. what is the value of x? show your work.

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?