Simplify polynomials -3x²+2x-x³+4-7x²​

Me asap! what is the slope of this line? enter your answer in the box.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?