The ratio of boys to girls in a group is 7:2. If there are 70 more boys than girls, work out how many people there are in total.

126

Step-by-step explanation:

Boys: girls = 7:2

No. of boys = 7x

No. of girls = 2x

7x - 2x = 70

5x = 70

x = 70/5

x = 14

No. of boys = 7x = 7*14 = 98

No. of girls = 2x = 2*14 = 28

Total = 98 + 28 = 126

hi, i am not sure about this one but i think its d,

hope this !

  b.   the average rate of change of f(x) is less than the average rate of change of g(x).

step-by-step explanation:

since the length of the interval is the same in each case, we only need to compare the change in y-value to see which is greater.

so the change in y-value for function f is (6 )) = 9.

the table tells us

so the change in y-value for function g is (31 -1) = 30.

the change in y-value of f(x) on the interval is less than the change in y-value of g(x) on the same interval, so the average rate of change of f(x) is less than the average rate of change of g(x).