Given_{0}∫^{5}f(x)dx=10 and_{5}∫^{7}f(x)dx=3, (by the way, that means the intervals for the first one are 0 and 5, and the 2nd one is 5 and 7)

Find...

(a)_{0}∫^{7}f(x)dx and (b)_{0}∫^{5}f(x)dx

I wasn't sure how to do this, because there were no variables, so I thought f(x)dx=3, but then the intervals are different.

So for like the first one, I know that the intervals are [0, 7]

Then what we're integrating is f(x)dx

But I'm a bit confused on how to start off with that.

I'm used to integrating when given an equation, but this one is giving the function.

Can someone explain to me?

Thanks.