Sofia is 4 years younger than mark. david is 7 years older than mark. how old will sofia be when david is 30 years old?

when david is 30, mark will be 37 which means sofia is 37-4 which means sofia will be 33 years of age

Step-by-step explanation:

sofia. David. Mark

x-4. x+7. x

10a^3+277a^2-132a-792

step-by-step explanation:

(2a+11)(5a-12)(foil)

=10a^2-24a+55a-132 =10a^2+31a-132

(10a^2+31a-132)(a+6)

=10a^3+60a^2+31a^2+186a^2-132a-792 =10a^3+277a^2-132a-792

i hope this is what you are looking for : )