The product of five and a number plus 10 is at least thirty

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

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:

Find the area of the triangle formed by the origin and the points of intersection of parabolas y=−3x^2+20 and y=x^2−16.