9. Write a program, led_pb. c that performs the following steps using the provided sysfs_gpio files: a. Include the sysfs_gpio. h file b. Initializes the LED pin to be an output by calling gpioOutput() c. Initializes the switch pin to be an input by calling gpioInput() d. Turns on the LED using gpioWrite() e. Enters a while loop that calls gpioRead() and waits for the switch to read 1 f. Turns off the LED using gpioWrite()

For a typical middle-income family, what is the estimated cost of raising a child to the age of 18? $145,500 $245,340 $304,340 $455,500

Function name: poly parameters: int returns: int description: a polynomial of degree n with coefficients a0,a1,a2,a3, . . ,an is the function p(x) = a0+a1x+a2x2+a3 ∗ x3+ . . +an ∗ xn this function can be evaluated at different values of x. for example, if: p(x) = 1+2x+ x2, then p(2) = 1+2 ∗ 2+22 = 9. if p(x) = 1+x2+x4, then p(2) = 21 and p(3) = 91. write a function poly() that takes as input a list of coefficients a0, a1, a2, a3, . . , an of a polynomial p(x) and a value x. the function will return poly(x), which is the value of the polynomial when evaluated at x.

If the average computer chip had 1,200 transistors per square inch in 1970, approximately how many transistors per square inch would one have in 1976? use moore's law to calculate your answer