22. Compute the following algebraic sums:
a) 5 - 3 + 6 + 2 - 10 - 12:
b) -15 + 8 + 9 - 3 - 5 + 18;
c) 28 - 41 +62 + 3 - 102 - 5:
d) -1.2 + 5.8 - 6.7 - 5.9 + 2.4;
e) 7.4 - 5.8 + 8.3 -6.1 + 7.5:
f) 12.6 - 15.4 + 7-10;
g) 7.8 - 3.5 + 5.3 - 12.1 + 7.8;
h) 10.6 - 13.4 + 4 - 10:
i) 7 - 5 - 9 + 0.3 -0.08 ;
j) -24 + 11.02 - 3.014 + 0.05 -0.007.​

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?

Paul can type 60 words per minute and jennifer can type 80 words per minutes.how does paul's typing speed compare to jennifer's