How do I type in exponents

A large suburb currently uses square signs to notify drivers of nearby bike lanes. In order to increase the visibility of these signs, the mayor wants to increase their dimensions.

Which of the following phrases are equations? Choose 2 answers: A: 4x3 B: b=9 C: 7+19=26 D: a+9>72 E: x + y - 8/3

A chemist adds of a M aluminum sulfate solution to a reaction flask. Calculate the millimoles of aluminum sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

2. Another wooden plank is leaning against an outside wall of a building. The bottom of the plank is 9 ft from the wall. The length of the plank is 41 ft. Find each of the following values, and show all your work. (a) Find the value of x.

Which of the following shows the graphical representation of the solution for the one-variable linear equation 2x - 1 = 3?

It costs $5 to become a member of a video game club. After that, video games 10 each with a 7% tax on each game. If you spent $69.20 TOTAL, how many video game did you buy?

Lisa and valerie are picnicking in Trough Creek State Park in Pennsylvania. Lisa has brought a salad that she has made with 3/4 cup of strawberries, 7/8 cup of peaches, and 1/6 cup of blueberries. They ate 11/12 cup of salad.

there are four colors red white black and blue on a spinner and there is a coin. what is the probability of spinning a red and heads?

Sodium-24 has a half-life of 15 hours. How many grams of a 900 g sample will remain after 90 hours? A) 7.03125 g B) 7.5 g C) 14.0625 g D) 28.125 g

Find the area of a parallelogram with the base 15 yards in the height 21 2/3 yards