Question

Please help the following questions

Answer 1

Question 7. Option B,

Question 8. Option C

Explanation:

Question 7.

Let us create a proportionality, and solve for the value of s, through cross multiplication;

`3 / 12 = s / 15,\\3 * 15 = 12 * s,\\12 * s = 45,\\\\s = 3.75\\\\Conclusion - Option B`

Question 8.

We can solve this problem in a similar manner, through setting a proportionality and solving for the length of the shadow of the tree, which we can pose as x;

`5 / 6 = 25 / x,\\5 * x = 6 * 25,\\5x = 150,\\\\x = 30 ft\\\\Conclusion - Option C`