The graph shows the number of paintballs a machine launches, y, in x seconds:

a graph titled rate of launch is shown. the x axis label is time in seconds, and the x axis values are from 0 to 10 in increments of 2 for each grid line. the y axis label is number of balls, and the y axis values from 0 to 60 in increments of 12 for each grid line. a line is shown connecting points on ordered pair 2, 12 and 4, 24 and 6, 36 and 8, 48.

which expression can be used to calculate the rate per second at which the machine launches the balls?

a.) 2/12
b.) 12/2
c.) 2/48
d.) 48/2

Option B.) 12/2

Step-by-step explanation:

we know that

The rate of a linear equation is equal to the slope m

The slope is equal to

points (2,12) and (4,24)

m=(24-12)/(4-2)

m=12/2

m=6 balls/sec

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

86

step-by-step explanation:

find the area of the triangle then multiply by 2 then add the area of the parollelegram multiplied by 2