If a is directly proportional to b, we have the relationship to be:

When a = 25, b = 35. Therefore, we can calculate the value of k as follows:

Therefore, the relationship is given to be:

When a = 40, we can calculate the value of b to be:

The value of b is 56.
<em>y over 4 </em><em>means the number (y)</em><u><em /></u><em> </em><em>divided by 4.</em><u><em>
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<span>If the interest is comounded every 2 months then you will
apply the interest 6 times in a year. So the value of n that you will plug into
your equation is 6 because there 12 months a year then it wll be compounded
every 2 months</span>
Answer: First option:
Angle C is congruent with angle X, angle D is congruent with angle Y, angle A is congruent with angle Z
3(7v-5)-v(10v-9) = 21v - 15 -10v² + 9v = - 10v² + 30v - 15