What operation always joins a variable and its coefficient in an algebra expression

Which expression represents the sum of 47 and an unknown number? A. 47n B. 47 - n C. 47 + n D. 47 : n

There are 212 students in the 8th grade class. The number of girls is 49 less than twice the number of boys. How many girls and boys are in the class?

Quadratic equation that contain the three ordered pairs (1,6), (3,26), (-2,21)

The zero of the function in A (x) = 9x^2-25/3x+5 is A. - 5/3 B. 5/3 C. 5

A math teacher is trying to analyze her test grades. She surveys the students to find out how many minutes they studied. She then makes a scatterplot of time studying and test grades. What is the domain?

Shakira pays $33 for 22 pounds of peanuts. if the price per pound is the same how much will shakira have to pay in order to buy 15 pounds of peanuts

This Box-and-Whisker Plot displays the distribution of scores of a recent physics test. What is the range of this set of physics test scores? A. 30 B. 70 C. 100

The - - lets you add or multiply more than two numbers in groups of two in any order

Peter is bee keeper who sells jars of honey and honeycomb at the market for every 10 jars of honey he Brings to the market he brings 3 honeycomb which of the following could be what Peter brings to the market choose two answers A) 18 jars of honey

A ball's position, in meters, as it travels every second is represented by the position function s (t) = 4.9t^2 + 550. What is the velocity of the ball after 3 seconds? I think the answer is - 20.6 ft./sec. Just looking for confirmation.