Question

Va rog eu, a zis profu de mate ca daca nu le fac imi pune 3 (macar 1 ex daca se poate)​

Answer 1

$\it 2.\ b)\\ \\ S=-3(1+2+3+\ ...\ +37)+7\cdot37=-3\cdot\dfrac{37\cdot38}{2}+7\cdot37=\\ \\ \\ =-3\cdot37\cdot19+7\cdot37=-37(57-7)=-37\cdot50=-1850$

3.  a)

$\it g(x)=f(x-3)=2(x-3)-3=2x-6-3=2x-9$