What is 3.16 times 10 to the 3rd power in standard form

Read the following two statements. then use the law of syllogism to draw a conclusion. if the tv is too loud, then it will give me a headache. if i have a headache, then i will have to rest.

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?

Y= x – 6 x = –4 what is the solution to the system of equations? (–8, –4) (–4, –8) (–4, 4) (4, –4)