Please help

Find the value of x. Round the length to the nearest tenth.

A: 7.1 cm

B: 13.1 cm

C: 8.4 cm

D: 9.2 cm

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?