How do I solve x squared - 7=-8 by taking square roots

Suppose triangle A B C is similar to triangle P Q R. Also, angle A measures 45° and angle B measures 60°.

What is 9 (x2) I don't understand this

The principal of a high school needs to plan seating for commencement. The following two-way table displays data for the students who are involved in this year's commencement ceremony.

A cell phone company charges a monthly fee plus $.25 for each text message. The monthly fee is $30 and you owe $59.50. How many text messages do you have?

The principal took a survey of the sixth grade students and found that 111 of 210 said they wished they could wear shorts to school. There are 903 students at the school.

If a single dice is rolled 3 times, how many different outcomes are possible?

Last week Kristen bought 5 pounds of apples this week she bought 1 half of that amount how many pounds of apples did Kristen buy this week

Zach has 53 flowers to plant. he wants to plant them in groups of 10s and 1. zach can plant 10 flowers in each flower box. He can plant 1 flower in each pot. How many different ways can zach plant flowers in boxes and pots

Jesse measures the water level from the top of a dock twice a day. The water level in the morning is 3 feet. The water level in the afternoon is 7.5 feet. Which statement about the relationship between the two measurements is true?

Charlotte has been working for her company for x years. Travis has been working for the same company exactly 3 years longer than Charlotte. What is the range of the relationship? A - y>0 B - y>3 C. y<3 D. 0