Can you explain how to work 7x+3x+5

Mr. cringle found a box of handmade holiday greeting cards in his garage and decided to make more to send to all his friends. After 2 hours had passed, Mr. Cringle had a total of 30 cards. After 6 hours had passed, he had a total of 40 cards.

Salma cut 4112 yards of fishing line from a new reel. How much is this in inches?

5 buses left Midville each day. 40 buses left in all. How many days did buses leave Midville?

The height of the box is 6 inches. The length of the box is 14 inches and the width of the box is 4 inches. Which equation could be used to find the surface area of the box

Joseph wants to estimate the mean number of siblings for each student in his school. He records the number of siblings for each of 200 randomly selected students in the school. What is the sample?

F (x) = -x^2 - 4x - 2, for this equation find the solutions, the coordinates of the vertex, and the axis of the symmetry.

Identify the restrictions on the domain x-7/x+4 : x/x+3 A. x = - 4, - 3 B. x=7,0 C. x = - 4,0 D. x=7, - 3

Pre-election survey showed that two out of three eligible voters would cast ballots in the county election. There are 240,000 eligible voters. How many people are expected to vote?

Solve this equation 8-x2 = - 17

2 railway station at a distance of 96 km from each other one train covr this distance in 40 min les then other the spedd of 1st train is 12km/h faster then that of the second