Carl opened a bank account that does not earn interest with $900. He deposits $30 per week. After how many weeks will Carl have $1260 in his bank account? A 12
B 30
C 42
D 360

Suppose a triangle has two sides of length 32 and 35, and that the angle between these two sides is 120°. which equation should you solve to find the length of the third side of the triangle?

Asap! i'm not good math and i'm lost.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.