Rikki decided to collect data determine if a runners time and speed are correlated. She determined the data to have a correlation coefficient of -0.5 what does this r value indicate A-no correlation
B-a strong positive correlation
C-a weak positive correlation
D-a negative correlation

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?