Ihave 3 math questions 30 points c:
1: what is the value of y so that the ordered pair (2, y) is a solution to the equation 2x + y = -2 ?
a.–6
b.–2
c. -1/2
d.0
joe earned $400 doing yard work this week. he charged $20 to mow a lawn and $10 to weed a garden. the equation 20m + 10w = 400 represents how much work joe did this week, where m is the number of lawns joe mowed and w is the number of gardens he weeded.
which variable is the independent variable?
a. m
b. w
c. there is no relationship between the variables.
movie tickets cost $5 per child and $9 per adult. the equation to find the total cost of the movie tickets is t = 5n + 9a , where n is the number of children, a is the number of adults, and t is the total cost.
which variable is the dependent variable?
a. a
b. n
c. t
d. there is no relationship between the variables.