7 × 10^7 in standard form

Which expression gives the area of the triangle shown below

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form