How do I find a1 for the geometric sequence down below

Sn = 1640, r = 3, n = 8

Simplify by combining like terms: - 10 + 7x + 24 - 2x

Ann opened a new savings account with an initial deposit of $250. Which combination will result in a zero in balance in Ann's account? A) Ever week for 5 weeks, deposit $10 on Monday, Wednesday, and Friday, and withdraw $27.

What does equation mean?

What is the expression for 8 less than the product of 5 and - 4

A high school coach wants to buy new athletic shorts for the 15 members of the basketball team. The coach must spend less than $200 on the shorts.

Solve the following equation -5x+3=68 What equals x

What is the shape of a cross section that is perpendicular to the base of a cylinder? A) rectangle B) triangle C) square D) circle

Henry bought 24 pounds of rice for $12. How many dollars did he pay per pound of rice?

triangle IJK is congruent to triangle PQR. If the measure of angle I=3x+4 and the measure of angle P=72-x, then determine the value of x

Y=8-2x closest numerator