Multiply - 3i (-8 + 7i). What is the simplified version written in standard form, a + bi, where a and b are real numbers?

-21 + 24i

21i2 + 24

21 + 24i

-4 - 11i

What is the nearest tenth of 47.5?

What is 14 divided by 2,744?

Nora has 1/2 of a pound of bird seed left to share equally among 3 bird cages in her pet shop. How many pounds can she put in each bird cage?

find the positive value of k that would make he left side of the equation a perfect square trinomial x^2-kx+64

Spencer is on a mountain 11,224 feet above sea level. Heidi is on a submarine 3703 feet below sea level in a direct line below Spencer. what is the distance between them?

John is trying to find the relationship between a student's age and the number of pets that he or she owns. He collects data from a random sample of students at his high school. He plots the data on a scatter plot.

The area of a rectangle is 45 square inches. The rectangle is 9 inches long. How wide is the rectangle? A. 5 inches B. 36 inches C. 27 inches D. 3 inches

A cylinder has a diameter of 24 inches. If its height is half its radlus, what is the volume of the cylinder in cubic Inches?

The jeans store sells 7 pairs of jeans per day when it charges $100 per pair. it sells 8 pairs of jeans per day at a price of $90 per pair. the marginal revenue of the eighth pair of jeans is

Two leopard seals, Snap and Snarl, start 210 meters apart. They swim toward each other at a constant speed of 10 km/h each. Gilly, a Gentoo penguin, starts at Snap and swims back and forth between the seals continually until the two seals meet.