Which of the following graphs represents a one-to-one function?

Find the slope of the line that passes through (3, 7) and (10, 4).

What the nearest whole for 80.356 + 46.585

What number is 110% of 40

2 (x+y) = y+10 4 (x+y) = 5y+32

Initially, $40/%$ of the students at the school dance are girls. Then, $15$ more girls arrive, after which $52/%$ of the students at the dance are girls. How many students are now at the dance after the additional girls arrive?

When 6 times a number is increased by 7, the result is 31 what is the number?

3 (3 - 8x) - 1 = - 6x - 28

A bag contains purple marbles and white marbles, 95 in total. The number of purple marbles is 1 less than 5 times the number of white marbles. How many purple marbles are there?

Elena has 12 pieces of banana bread. She gives an equal amount of banana bread to five friends. How many pieces of banana bread does she give each friend?

Order these from least to greatest 3/8 19/24 2/3