Evaluate 2^3x-1 for x = 1

The radius of Earth is 6378.1 km, which is 2981.1 km longer than the radius of Mars. Write and solve an equation to determine the radius of Mars. Show that your answer is reasonable.

What number plus 2 less than 3 times the number equals 14

Describe Sam's location relative to the theater

If 2x 3/4 + 7 = 23, then x = 16 true or false?

What is the value of x when (6x+1) + (2x+10) = 79

vitamin C comes in pills with a strength of 500 mg. how many pills would you need to make if you want a dosage 2 grams?

What is the rule for extend pattern for 2 4 8 16?

What is the orthocenter of the triangle with two altitudes given by the lines x = - 1 and y = x + 1.: (0, - 1) (-1, - 2) (-1, 0) none of these

Brenda is finding the product of - 3r and - 2r^2+3r Is she correct? If not, what changes should be made? - 3r (-2r^2+3r)

If x=73, what does 4x+3 equal?